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09-29-2015, 09:10 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,516
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Quote:
Originally Posted by Beer30?
Bill,
I'm intersted, but VAF says you've exceeded your private message limit. Contact me offline.
David
ddalton536@gmail.com
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Email on the way, David.
Quote:
Originally Posted by JakeLewis22
Bill,
Very nice work and as someone who had to rework a Sam James plenum, I can understand why you took on this task. The only thing I see that you may want to reconsider is the gap between the rear of the inlet ring and the front of the inlets on the platinum. When the engine shuts down it twist quite a bit and I think that your gap is not enough to allow for this movement.
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Nice work on the cover, Jake, I like your site and work. The clearance was close on the inlets to the rings for fitting. I will be doing some experimentation on what the gap should be. The prop has 5/8" clearance, so maybe 1/2" will work on the inlets. I was thinking shear would be the greatest displacement, from reaction torque, but yaw can/will occur too. 3/16" is definitely too small. I am kinda resisting just making the last 4" of the inlets out of rubber and bonding them to the inlet rings in order to keep the airflow clean. For now I will stick with the neoprene wrap.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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09-29-2015, 09:56 PM
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Join Date: Nov 2012
Location: Half Moon Bay, CA
Posts: 1,035
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Quote:
Originally Posted by DanH
And that, boys and girls, is what the inlet diffusers should look like.
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If Dan sez it's so, it's so. Very nice looking craftsmanship!
__________________
Bill Bencze
N430WB RV-7 #74152 @ KHAF, tip-up; IO-360-M1B; Hartzell CS. !! Phase 1 !!
2357 hrs over 8.5 years to get to flying. Log at: http://rv7.wbencze.com
VAF 2020 donation happily made
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09-29-2015, 11:35 PM
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Join Date: Nov 2008
Location: Olympia,WA
Posts: 210
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Beautiful work Bill.
__________________
Arnie Barros
VAF #1401
(N89269) reserved
"Seek to understand before trying to be understood"
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10-02-2015, 03:43 PM
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Join Date: Aug 2013
Location: Klgb
Posts: 125
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Plenum
Bill Im in and Seriously Interested. just sent you a PM. Call me I would love to talk.
Im a 7 SJ Long cowl Angle Valve AIA. I have just started started fitting the SJ plenum and stopped... I had planned to build my own but the material cost to build just one and my access to an oven to post cure became a problem.
The Cowl I am very happy with,the fit and install went smooth. However I am back to building my own plenum.
And now I see your post
Yes Please call me I PM'd my #
Thanks
__________________
AP/IA/CFI/ATP/EAA TC
RV-7 Tip N77XA
Paid 11/15
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10-04-2015, 06:50 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,516
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Post cure oven DIY
Quote:
Originally Posted by jj_jetmech
Bill Im in and Seriously Interested. just sent you a PM. Call me I would love to talk.
Im a 7 SJ Long cowl Angle Valve AIA. I have just started started fitting the SJ plenum and stopped... I had planned to build my own but the material cost to build just one and my access to an oven to post cure became a problem.
The Cowl I am very happy with,the fit and install went smooth. However I am back to building my own plenum.
And now I see your post
Yes Please call me I PM'd my #
Thanks
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I am discussing this with Jason off line, but for others, if the hurtle is an oven, here is the solution. 1" thick duct board. I heated it to 300f with no problem. Specs are higher on the aluminized side. Cost was about $35, not including thermocouple reader.
The plenum cover was post cure in this oven per resin supplier specifications. The floor (rack) was covered except for a 2-3" perimeter gap. The part was set on a 4" thick piece of wall insulation blanket to prevent hard points touching and reduce possibility of drooping. If the oven is preheated, then the element seldom comes on and temperature excursions are minimal. After curing several parts, I will run the oven through a clean cycle and let you know if any adverse effects are found. Smell and deposits thus far are minimal, so your home oven might work, but not endorsed at this time.

__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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11-25-2015, 05:12 PM
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Join Date: Jan 2010
Location: Ottawa, Ks
Posts: 2,188
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__________________
RV 7 400 hours and counting
19 donation done
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12-10-2015, 06:07 AM
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Join Date: Nov 2008
Location: Litchfield, Ohio
Posts: 68
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I'm interested. PM me with details on costs. I have a SJ cowl.....no engine yet though
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12-10-2015, 01:44 PM
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Join Date: Nov 2014
Location: Concord, NH
Posts: 215
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Will this set up work for an O-320 are the egine dimensions close to the same?
__________________
Steve Briggs. RV9, G3x, G5, VPX, GTN625, PMags, A&P, IA, ATP-CFII
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12-10-2015, 05:07 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,516
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Quote:
Originally Posted by sibriggs
Will this set up work for an O-320 are the egine dimensions close to the same?
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I don't know yet. I am working with a builder and we will have to wait and see. I don't have access to a 320, or plane to compare fits. It is certainly more narrow, which affects both plenum cover and inlets.
It might be months until we know for sure. Sorry, but that is the story.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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02-17-2016, 09:16 PM
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Join Date: Nov 2010
Location: Maple Grove, MN
Posts: 109
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plenum
Hi Bill, Your plenum looks great. I would be interested in a price for one of your plenums. Frank
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